MESON Chess Problem Database
Problem Display
PID: 198208 (8/n1N3N1/4BqPQ/1r6/3k4/4Rp2/b1R2K2/2B5 w - - 0 1)
Palkoska, Emil
1st Prize, Eskilstuna Schacksallskap, 1920
#2
9 + 6
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qh4+
- 2.Qxh4#
- 1...Qe7
- 2.Qf4#
- 1...Qxg7
- 2.Qf4#
- 2.Qh4#
- 1...Qd8
- 2.Qf4#
- 1...Qf4
- 2.Qxf4#
- 1...Rb2
- 2.Bxb2#
- 1...Rb3
- 2.Rc4#
- 1...Ra5
- 2.Bb2#
- 1...Rc5
- 2.Rd2#
- 1...Rd5
- 2.Bb2#
- 1...Re5
- 2.Bb2#
- 1...Rf5
- 2.Bb2#
- 1...Rg5
- 2.Bb2#
- 1...Rh5
- 2.Bb2#
- 1...Bb1
- 2.Rc4#
- 1...Bb3
- 2.Bb2#
- 1...Bc4
- 2.Rxc4#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...Qh4+
- Tries
- 1.Sf5+?
- 1...Rxf5
- 2.Bb2#
- 1...Qxf5!
- 1...Rxf5
- 1.Rd3+?
- 1...Ke4
- 2.Qe3#
- 1...Ke5
- 2.Qe3#
- 1...Kxd3!
- 1...Ke4
- 1.Re4+?
- 1...Kxe4
- 2.Qe3#
- 1...Kd3!
- 1...Kxe4
- 1.Qh4+?
- 1...Qf4
- 2.Qxf4#
- 1...Qxh4+!
- 1...Qf4
- 1.Sf5+?
- Keys
- 1.Qh8!
- 1...Qh4+
- 2.Qxh4#
- 1...Qxg7
- 2.Qh4#
- 1...Qxe6
- 2.Sf5#
- 2.Sgxe6#
- 1...Qxg6
- 2.Sf5#
- 1...Bxe6
- 2.Sgxe6#
- 1...Bc4
- 2.Rxc4#
- 1...Qe5
- 2.Sf5#
- 1...Qg5
- 2.Sf5#
- 1...Qe7
- 2.Sf5#
- 1...Qd8
- 2.Sf5#
- 1...Qf4
- 2.Sf5#
- 1...Qf5
- 2.Sxf5#
- 1...Qf7
- 2.Sf5#
- 1...Qf8
- 2.Sf5#
- 1...Rb1
- 2.Sf5#
- 1...Rb2
- 2.Sf5#
- 2.Bxb2#
- 1...Rb3
- 2.Sf5#
- 2.Rc4#
- 1...Rb4
- 2.Sf5#
- 1...Ra5
- 2.Bb2#
- 1...Rc5
- 2.Rd2#
- 1...Rd5
- 2.Bb2#
- 1...Re5
- 2.Bb2#
- 1...Rf5
- 2.Sxf5#
- 2.Bb2#
- 1...Rg5
- 2.Bb2#
- 1...Rh5
- 2.Bb2#
- 1...Rb6
- 2.Sf5#
- 1...Rb7
- 2.Sf5#
- 1...Rb8
- 2.Sf5#
- 1...Bb1
- 2.Rc4#
- 1...Bb3
- 2.Bb2#
- 1...Bd5
- 2.Sf5#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...Qh4+
- 1.Qh8!
This is a version of 187896
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 14
- REMOVED MATES = 3
- Sets
- Q(e);CHECK,N_GUARD::QAR(G),XQ(e)
- Q(e);N_GUARD::QAR2(G)
- Q(e);N_GUARD::QAR2(G),XQ(e)
- R(d);N_GUARD,P_PINR(B)::B(A),XR(d)
- R(d);S_CUTB(a)::R1(B)
- R(d);N_GUARD::B(A)
- R(d);SBLOCK::R(B)
- B(a);N_GUARD::R1(B)
- B(a);S_CUTR(d)::B(A)
- B(a);N_GUARD::R1(B),XB(a)
- S(f);N_GUARD::S(H),XR(d)
- Tries
- Try
- S(I);CHECK
- Vars
- R(d);XS(I)::B(A)
- Refutation
- Q(e);XS(I)
- Try
- R(D);CHECK
- Vars
- K(c);P-FLIGHT::QAR1(G)
- K(c);S_FLIGHT::QAR2(G)
- Refutation
- K(c);P-FLIGHT,XR(D)
- Try
- R(D);CHECK
- Vars
- K(c);P-FLIGHT,XR(D)::QAR1(G)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(G);CHECK
- Vars
- Q(e);N_GUARD,P_SPINQ(e)::QAR2(G),XQ(e)
- Refutation
- Q(e);CHECK,XQ(G)
- Try
- Actual
- Q(G);
- Vars
- Q(e);CHECK,N_GUARD::QAR(G),XQ(e)
- Q(e);N_GUARD,P_SPINQ(e),XS(I)::QAR(G)
- Q(e);XP(F)::QAB(G)+S(I),DCHECK
- B(a);XB(E)::S(I),XB(a)
- B(a);N_GUARD::R1(B),XB(a)
- Q(e);S_CUTR(d)::S(I)
- Q(e);::QAB(G)+S(I),DCHECK
- Q(e);::QAB(G)+S(I),DCHECK,XQ(e)
- R(d);N_GUARD::S(I)
- R(d);N_GUARD::B(A)
- R(d);SBLOCK::R(B)
- B(a);N_GUARD::R1(B)
- B(a);S_CUTR(d)::B(A)
- B(a);S_CUTR(d)::S(I)
- S(f);N_GUARD::S(H),XR(d)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).